body{
    position: relative;
}
.container{
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: url("../images/bg.jpg") no-repeat;
    background-size: 100% 100%;
}
.wrapper{
    width: 550px;
    height: 300px;
    border: 1px solid #ccc;
    background: rgba(0,0,0,0.1);
    border-radius: 5px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}

.wrapper h2{
    font-size: 26px;
    color: #fff;
    text-align: center;
    margin: 30px 0;
    letter-spacing: 3px;
}

.layui-form-item{
    margin-bottom: 30px;
}



















